My DD is 15 weeks and the last week or so I’ve been really struggling to get her to nap during the day. She sleeps well at night from around 8, waking for a feed at 4 then back to sleep until 6:30ish. She has started waking at around midnight recently but usually settles back down fairly quickly once I’ve given her dummy.
During the day though she just refuses sleep, she’ll have the odd 20-30 mins here and there if I’m lucky but she just won’t settle. I’ve tried long walks in the pram, drives in the car, putting her in her crib, pram in lounge and nothing works. The result is by mid-late afternoon she’s so over tired she just cries constantly and is very unhappy 
I know about 4 month sleep regression which we are approaching but I thought this was more of a nighttime issue than a issue with naps? She does seem to have been extra hungry the last few days so possibly a growth spurt? Can anyone help?